The 154XST meets Type 4X water-tight, dust-tight, and corrosion-resistant requirements; constructed to IP66. This hazardous location warning light has an aluminum base, coated for corrosion-resistance that is ready for surface mounting or mounting on a 3/4 inch pipe. The Dome Guard (included) fits over the glass dome to protect it against accidental collision with moving equipment, such as forklifts. The 154XST contains a diode and four wire leads for use in fire alarm* applications.